I am getting these strange requests on my server which I deployed with ECS and not sure how to tackle it. Even though I don’t think I have any exposed endpoints which are being requested, it still scares me a bit. Please help.

I was looking on stackoverflow for answers and found one How can I set AWS ELB block too many queries from a given IP? I had implemented a WAF for the ECS service with region restrictions and rate limiting. But I am still getting requests from other regions (not 100% sure but seems like from the requests).
I would like to block these requests or if not at least secure my server as much as possible.